after the jovan belcher murder-suicide, bob costas set off a bis of a controversy when he decided to address the issue of gun control during an nfl broadcast. >> if jovan belcher didn't possess a gun, he and kasandra perkins would both be alive today. >> why do athletes love guns? the reality is this is a gun culture. lots of people own guns. >> reporter: he says the issue of guns and athletes is about youth, money, and perceived power. >> the problem is that many don't outgrow their power, a new national pastime has some very deep seated issues. >> reporter: the league has had a strict gun policy in place since 1996 that prohibits players from bringing guns to any facility or event affiliated with the league. but that was not enough to stop a tragedy in kansas city this past weekend. for "cbs this morning," i'm jim axelrod in new york. >> senior correspondent john miller former fbi assistant director joins us now. how do they go about enforcing the existing gun laws? >> well what they do is -- they've got this policy and jeff miller the former head of the pennsylvania state police h